Process for chemically retting and ungumming of all textile plants.



UNITED STATES PATENT oFFIoE- ANTONIN BLACHON AND JEAN PERETMERE, 'OF PARIS, FRANCE.

PROCESS FOR oHEMIc LLY. BETTING AND UNGUMMING OF ALL TEXTILE PLAurs.

T 0 all whom it may concern:

Be it known that we, ANTONIN -BLAGHON and JEAN PERETMIERE, chemists, citizens of France, residing at 61 RuefHall, Paris,

France, have invented new and useful lmprovements in Processes for Chemically Retting and Ungumming Textile Plants, of

' The w rk is c'nisequently'effecfed in the pen air by means of an open boiler the capaci'y of which corresponds to the volume of the textile plants to be retted. Bcsides all the plants can be treated e ther dried or undried, avoiding thus the oiling for the jute.

The details of an operation will be described hereinafter, but it will be understood proport ons of the substances and by Way of example. 7

To charge a bath, the boiler is first filled up to the three quarters of its volume with a lye of soda at 12 degrees Baum, say about 7 to 8 per cent. of real soda. The bath is then made to boil and the following products are added for 100 litersot'liquid: common sea salt, 2 kgr. 500, purified potassium-chlorid, 2 kgr. 50,0, hypochlorid of soda at 20 chlorometric degrees, about 2 kgr. 500. This mixture is stirred rapidly, the textile plant is introduced therein, and the whole is kept boiling softly up to the. end of the treatment.

\Vith a fresh bath, the duration of the treatment varies as follows according to the plant treated: to 50 minutes for flax Specification of Letters Patent. Application filed July 2, 1907. Serial No. 381,92.

The advantage of this process is Patented Dec. 1, 1908.

which is already etted or an hour for straw flax dr1ed or unlried. 1 hour for hemp. 2 hours for alfa.

thongs of bohmeria, and besides 'for these substances 20 to 30 minutes of stay in a sec- .ond bath'having the same composition as 2% hours for china root and for Jute ii-thongs. 3 hours for'rough,

the first, which makes in this case a total duration of about hours. The bohmeria pellicles are then completely dissolved or disaggregated in such a manner that they. detach themselves during the second stay in the bath. i

The baths which have served to ungum the textile plants slightly impregnated with gum, such as flax, hemp, china root, may be regenerated by adding a tlnrd of a'fresh bath. The baths more impure which have served for the treatment of thongs of jute or of bohmeria must be regenerated by adding a half of a fresh bath. As to the baths ot' a second say, they may serve several times without being modified.

-Having now particularly described our invention, wlat we claim as new andklesi're to secure by Letters Patent-(is:

A proeesst'or chemically removing the pellicles from b'ihmeria and for retting and ungnmming all tektileplants in a single" bath, consistlng in treating said plantsin a bath kept boiling and formed by adding nto a lye of soda common sea-salt. purified potassium-ch'lorid and hypochlorid of soda, v 

